Warrant Finance Question

Thoughts on best way to finance the exercise of warrants if you don't have a cashless exercise.  For example, you have Series A pref warrants that are in the money at exit, but you don't have a cashless exercise option.  So you have to come up with $100K to exercise the warrants to profit $1.0MM at the exit.  If you don't have the initial $100K in cash available at the time, how to best finance the conversion?  Any thoughts appreciated.  Thank you.